introduction

Attangle is an abstract stacking game for 2 players. This last game concludes Dieter Stein's
Stacking Game Trilogy.

equipment

A hexagonal board with 4 spaces on each side (37 spaces), and

18 white and 18 black stackable pieces.

object of the game

The game is won by the player who can build 3 triple stacks.

sequence of play

Figure 1 – Initially the board is empty.

Players choose their color and place a stock of 18 pieces in front of them.
White makes the first move. Then turns alternate.

During the game players enter new pieces and build stacks of pieces through
capturing moves.

A player controls a stack if he owns the topmost piece. A stack can
never be split.

Generally a player can either:

Place a piece from the stock on any empty space (except the center d4, which must be unoccupied throughout the game), or

capture an opponent's piece or stack of pieces on the board.

Players cannot pass their turn. If the stock is empty a player
must make a capture move or otherwise resign the game.

Generally, a capture move is a movement of two different pieces on the board and stacking up on an opponent piece. After that the current player takes back the
topmost piece (which will be always of his color) to the stock. The maximum height of
a stack (after taking back one piece) is three. It follows that there are three
possible capture moves:

Two single pieces capture a single piece (Fig. 2).

Two single pieces capture a double stack (Fig. 3).

One single piece plus a double stack capture a single piece
(stacked so that two pieces of the current player are directly on top) (Fig. 4).

As a rule of thumb just remember: looking at the three pieces (or stacks resp.) of a capture move, only one double stack can be involved.

Pieces always move in a straight line and any number of unoccupied spaces. It is
allowed to cross the center d4. Triple stacks cannot be moved.